Have a 07 ran 2500 5.9 cummins... ats intake..smarty tuner...guy just put a fisher plow on truck brought it to me its coding P2509 ecm/pcm power input intermittent herd of problem
before being a ground wire or batt but any imput or has anyone else had the same problem?

 

Did you have to remove any factory grounds when you installed the plow? If you did they may not be making a good connection causing this issue.

 

Well after going through the grounds tested batterys found one good and one tested bad replaced with new battery cleared codes put tunner back in and 300 miles plus no cel back on...so check batterys if you get this code

 

Checked my batts there good now I'm gonna clean up the cables n hopefully it goes away... Sure does mess with the truck.. mines messing with my trailer brake controller, my radio, won't let the truck start sometimes.. doesn't work the grid heater till after the truck is started..

 

Check all your grounds to the motor/chassie make shore there all clean and dont have any green spunk on them...took me a while but i cleaned them all and found a few that were iffy..best of luck alson check ur batt terminals found drivers side pos cable to ne bad at the joint were it goes over to secondary batt

 

Alrighty ill be cleaning the cables tonight.. checking everything else in the morning.. it just puzzled me cause in a matter of ten minutes mine went from running good to fussy to a tempermental b**** with a could after I changed the oil and fuel filter